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安徽铜陵天马山金硫矿床发育上部层状矿体和下部网脉状矿体,地球化学特征呈现出明显的垂向变化和二元结构性。从下部网脉状矿化岩石到上部层状矿石,Pb、Zn、Au、Ag、As、Hg等含量和δ18O值总体逐渐增高,Cu、Mo、Cr、Co、Ni、REE等含量和成矿温度499℃→65℃及δ34S值总体呈逐渐降低趋势。黄铁矿的δ34S值为+4.0‰~+9.6‰,上部层状块状矿石中方解石和石英的δ18O平均值为+13.7‰,下部网脉状矿化岩矿石中脉石英或全岩δ18O平均值为+12.3‰。地质地球化学特征反映天马山金硫矿床为海底热水喷流沉积成因。
The upper and lower nepheline orebodies are developed in the Tianmashan gold-sulfur deposit in Tongling, Anhui Province. The geochemical characteristics show obvious vertical variation and binary structure. The content of Pb, Zn, Au, Ag, As, Hg and δ18O values gradually increase from the lower reticular mineralized rock to the upper layered ore, while the contents of Cu, Mo, Cr, Co, Ni, Temperature 499 ℃ → 65 ℃ and δ34S values showed a general trend of decreasing. The δ34S values of pyrite range from + 4.0 ‰ to + 9.6 ‰, and the average δ18O values of calcite and quartz in the upper stratiform ore are + 13.7 ‰. The δ18O values of vein quartz or whole rock in the lower reticular mineralized ores Is + 12.3 ‰. Geological and geochemical characteristics of the Tianma Mountain gold-sulfur deposit reflect the origin of the submarine hot water jet deposition.